Aluminum metal protective case with aluminum mirror back cover
+ Tempered Glass

Protection from scratches and abrasions
thus also a certain protection against loss of value

Available for different smartphone brands, models
for example Samsung, Apple or Huawei

Alu Bumper is a combination of modern design and safety. Protect your smartphone.
The housing is made of extremely durable and lightweight aluminum, which protects it resistant to dust and impact.
The Buper is easy to install and fits perfectly to the shape of the smartphone.
User-friendly cutouts allow full access to all ports and function buttons.


Detailed description of case/bumper:

• Material: aluminum
• Condition still 100%
• All connections (e.g. headphone charging connection) freely accessible
  
• 
  

Detailed description tempered glass:

• Premium tempered glass pane only 0.3mm thin
• Degree of hardness of 9H (9H degree of hardness 9 = corundum (sapphire) grinding hardness 1000 according to Rosiwal only the diamond is harder = 10H)
• rounded edges and corners
• High quality
• Fit 100% on any existing model
• easy to attach the glass panel and easy to remove without leaving any residue
• Touch screen protection from scuffs and scratches, Spiter protection
• No operating influence on the touchscreen
• Please note that this film is made of hardened real glass and 1-2 mm of space was deliberately left at the edge of the smartphone.
  The smartphone displays are slightly rounded and therefore the film cannot lie there, this distance was deliberately kept.   
  

included :

• 1x protective cover made of aluminium, gold or silver or without tempered glass, see the variant above.
  
• 1x tempered glass panel on dust tape
• 1x alcohol wipe packed
• 1x micro duster

Information: Use an alcohol wipe to clean "before" attaching.

You can find more tips about your tempered glass and the aluminum bumper on You Tube.

Excerpt from Wikipedia:
Tempered glass is a type of glass in which mechanical stresses are specifically generated in the material through heat treatment
and thereby the fracture resistance to mechanical or thermal stress is increased.

The finished glass workpiece is heated in an oven and then quickly cooled.
This quenching solidifies the surface and the external dimensions of the component change only comparatively little.
However, the warmer core continues to contract even more, since thermal expansion is significantly higher above the transformation point than below.
This creates a permanent stress field in the component: a sphere is thus prestressed both radially and tangentially,
A plate is under compressive stress on its surfaces, while a neutral fiber runs in the middle under tensile stress.

Due to this frozen prestress, the tempered glass can compensate significantly higher tensile loads than untreated glass.
Since the compressive strength of glass significantly exceeds the tensile strength, this represents an overall improvement.
However, a workpiece treated in this way can no longer be cut non-destructively as is possible with untreated glass,
be ground or broken. In the event of glass breakage, the component crumbles into small crumbs.

Tempered glass is used wherever increased mechanical or safety requirements are placed on glass,
for example:

    * Window panes on vehicles (car side windows (toughened safety glass), windscreens are laminated safety glass)
    * Pressure-resistant lenses
    * Glass furniture
    * All glass doors
    * Diving masks
    * Touch screens